Looping isometric animation
You can create a path (Shift + A  > Curve > Path) that you want the camera to follow. After that, move the camera to the starting position of the path.

Then set the path as a parent of the camera (Ctrl + P  on a PC) and select Follow Path.

In the path settings, you can now set the duration of the animation. Using a constraint you can even make the camera track another object or always look forward or whatever.